3D Local Earthquake Tomography of the Andaman–Nicobar Subduction Zone Using Ocean‐Bottom Seismometer Data

P Mahesh, C Sribin, P Dewangan… - Bulletin of the …, 2024 - pubs.geoscienceworld.org
ABSTRACT The Andaman–Nicobar (A–N) subduction zone is one of the most seismically
active subduction zones of the world where the Indian plate subducts beneath the Burmese …

Tectonics of the Andaman backarc basin—present understanding and some outstanding questions

KA Kamesh Raju, KK Aswini, V Yatheesh - The Andaman Islands and …, 2020 - Springer
Abstract The Andaman Backarc Basin is characterized by active seafloor spreading spurred
by the right stepping dextral shear imposed on the trans-basinal Sagaing-Andaman-Nicobar …

Geometry of the subducting Indian plate and local seismicity in the Andaman region from the passive OBS experiment

P Singha, P Dewangan, KAK Raju… - Bulletin of the …, 2019 - pubs.geoscienceworld.org
We deployed a temporary passive ocean‐bottom seismometer (OBS) network from 25
December 2013 to 15 May 2014 to understand the local seismicity pattern in the Andaman …

Seismotectonic evaluation of off Nicobar earthquake swarms, Andaman Sea

KK Aswini, KAK Raju, P Dewangan, V Yatheesh… - Journal of Asian Earth …, 2021 - Elsevier
Abstract The Andaman Sea has experienced a number of earthquake swarms as a result of
complex tectonics arising from oblique subduction, active volcanic arc, the backarc …

Depth-wise attenuation mechanism of seismic waves in the Andaman region

A Dutta, R Biswas, C Singh, MR Kumar, N Jana… - Soil Dynamics and …, 2021 - Elsevier
This study evaluates the depth-dependent seismic wave attenuation characteristics in the
Andaman region which is a part of the Andaman-Nicobar Subduction zone (ANSZ), and …

Spatial variations of coda wave attenuation in Andaman–Nicobar subduction zone

C Singh, R Biswas, N Jaiswal… - Geophysical Journal …, 2019 - academic.oup.com
We investigate the spatial variations of coda attenuation (Q c) structure in the tectonically
complex Andaman–Nicobar subduction zone (ANSZ). This is probably the first attempt to …

Relative role of intrinsic and scattering attenuation beneath the Andaman Islands, India and tectonic implications

C Singh, R Biswas, G Srijayanthi, MR Kumar - Physics of the Earth and …, 2017 - Elsevier
The attenuation characteristics of seismic waves traversing the Andaman Nicobar
subduction zone (ANSZ) are investigated using high quality data from a network of …

Sub-surface magma movement inferred from low-frequency seismic events in the off-Nicobar region, Andaman Sea

KK Aswini, P Dewangan, KA Kamesh Raju… - Scientific Reports, 2020 - nature.com
Monitoring volcanic activity along the submarine volcanoes that are usually induced by
subsurface magmatism is a challenge. We present fresh set of Ocean Bottom Seismometer …

A statistical analysis of volcano-tectonic earthquake swarms in the off Nicobar region of the Andaman Sea

P Chingtham, B Sharma, KK Aswini - Acta Geophysica, 2024 - Springer
The present research work is primarily carried out to select the suitable and better variants or
functions of ETAS models to describe the energetic offshore earthquake swarms following …

Possible Linkages between Microseisms in the Andaman‐Nicobar Region and Swells in the South Indian Ocean

TR Reddy, P Dewangan… - Seismological …, 2021 - pubs.geoscienceworld.org
Microseism source characterization and its genesis play a key role in linking microseism
records to prevailing atmospheric and oceanic conditions. In the present study, we analyzed …